Wait what are trying to answer here
20 is the answer.
15% of 50= 7.5
45% of 50= 22.5
22.5+7.5=30
50-30=20.
Answer:
Perpendicular
Step-by-step explanation:
L1 :
let A(-1,4) B(3,2)
the slope is : (YB - YA)/(XB -XA)
(2-4)/(3+1) = -2/(4)
the slope is
: -1/2
L2 :
let C(2,5) D(4,9)
the slope is : (YD - YC)/(XD -XC)
(9-5)/(4-2) = 4/(2)
the slope is
: 2
2×(-1/2)= -1
Perpendicular
330 km/hr
Step-by-step explanation:
To find speed of the plane against the headwind;
600 km / 2 hours = 300 km/hr
Speed of plane with the wind in its back;
600 km / 5/3 hours = 600 * 3/5 = 360 km/hr
We can create a simultaneous equation from this data.
Assume the speed on pane in still air is x km/h
Assume the speed of wind is y km/h
Therefore;
x – y = 300
x + y = 360
Solving the simultaneous equation by elimination gives us;
x – y = 300
-
x + y = 360
=
-2y = - 60
y = 30
x = 330
The speed of the plane without wind is;
= 330 km/hr
The wind speed is;
= 30 km/hr
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Answer:
A rational number with denominator zero is not defined.
option 4